CXT6176 CXT8192 CXT8192A Pullable Quartz Crystals Features l General Description Provides Jitter Attenuation Function for the Following T1/E1 Line Interface Units CS61304A, CS61305A, CS61535A, CS61574A, CS61575, CS61577 l Provides Jitter Attenuation Function for the CS61600 Jitter Attenuator The CXT6176 and CXT8192 pullable quartz crystals ensure proper jitter attenuation and frequency tolerance for Crystal Semiconductor’s line interface and jitter attenuator devices. The CXT6176 is designed for use in 1.544 MHz T1 applications and the CXT8192 is designed for use in 2.048 MHz E1 applications. The CXT8192A is a specialized tight tolerance crystal designed to meet the CTR12 jitter attenuation requirements for E1 applications when used with the CS61575, CS61304A, and CS61305A line interface devices. ORDERING INFORMATION CXT6176: HC-49 Package, -40 to +85 °C CXT6176U:HC-49U/N Package, -40 to +85 °C CXT8192: HC-49 Package, -40 to +85 °C CXT8192U:HC-49U/N Package, -40 to +85 °C CXT8192A:HC-49 Package, -40 to +85 °C CXT6176 CXT8192 CXT8192A CMOS OSCILLATOR CIRCUIT MODEL C load A Crystal Line Interface or Jitter Attenuator Device Preliminary Product Information Crystal Semiconductor Corporation P.O. Box 17847, Austin, Texas 78760 (512) 445 7222 FAX: (512) 445 7581 http://www.crystal.com This document contains information for a new product. Crystal Semiconductor reserves the right to modify this product without notice. Copyright Crystal Semiconductor Corporation 1997 (All Rights Reserved) JAN ‘97 DS39F4 1 CXT6176 CXT8192 CXT8192A CXT6176 Performance Specifications Parameter Total Frequency Range Operating Frequency Cload = 11.6 pF Cload = 19.0 pF Cload = 37.0 pF Min Typ Max Units (Note 1) - 370 390 ppm (Note 2) (Note 3) (Note 2) 6.176803 6.175846 - 6.176000 - 6.176154 6.175197 MHz MHz MHz Min Typ Max Units (Note 1) - 210 245 ppm (Note 2) (Note 3) (Note 2) 8.192410 8.191795 - 8.192000 - 8.192205 8.191590 MHz MHz MHz Min Typ Max Units (Note 1) - 160 190 ppm (Note 2) (Note 3) (Note 2) 8.192410 8.191795 - 8.192000 - 8.192205 8.191590 MHz MHz MHz CXT8192 Performance Specifications Parameter Total Frequency Range Operating Frequency Cload = 11.6 pF Cload = 19.0 pF Cload = 37.0 pF CXT8192A Performance Specifications (Notes 4, 5) Parameter Total Frequency Range Operating Frequency Cload = 11.6 pF Cload = 19.0 pF Cload = 37.0 pF Notes: 1. 2. 3. 4. With Cload varying from 11.6 to 37.0 pF at a given temperature. Measured at -40 to 85 °C. Measured with Saunders 150D meter at 25 °C. The CXT8192A crystal is designed to meet CTR12 jitter attenuation requirements for E1 applications when used with the CS61575, CS61304A, and CS61305A line interface devices. 5. Due to tighter total frequency range tolerances, the CXT8192A must be placed within 0.5 inches of device crystal pins and cut-outs should be made in power and ground planes beneath the crystal traces to minimize parasitic capacitance. General Specifications & Package Dimensions Mode Fundamental Drive Level 2 mW (max) Aging 5 ppm/yr. (max) Shock 10 G’s, 6 ms, 6 planes Vibration 5 G’s, 10 Hz to 500 Hz Seal Leaks 10-8 cc/sec in Helium Solderability per Mil. std. 202, method 208 (no preconditioning, RMA flux) Thermal Shock 5 cycles, -55 to 125 °C, 1/2 cycle/hr. in air 0.435 0.183 0.530 0.500 min Series Resistance 40 Ω (max) at 50 µW power (CXT6176,CXT8192 Series Resistance for CXT8192A 60 Ω (max) at 50 µW power 0.192 0.017 All measurements are in inches Package identifier: HC-49 2 DS39F4 CXT6176 CXT8192 CXT8192A 0.020 0.050 MIN 0.065 MAX 0.512 0.680 0.236 0.055 0.055 0.192 0.435 All measurements are in inches Package identifier: HC-49U/N DS39F4 3